Question

C++

Chapter 10 defined the class circleType to implement the basic properties of a circle. (Add the function print to this class to output the radius, area, and circumference of a circle.) Now every cylinder has a base and height, where the base is a circle. Design a class cylinderType that can capture the properties of a cylinder and perform the usual operations on the cylinder. Derive this class from the class circleType designed in chapter 10.   Some of the operations that can be performed on a cylinder are as follows: Some of the operations that can be performed on a cylinder are as follows: calculate and print the volume, calculate and print the surface area, set the height and set the radius of the base.

You will use circleType header file and implementation file from Chapter 10 in Example 10-8 for this exercise.

You will create your own cylinderType header file and implementation file (this will inherit from the circleType class).

• HINT: the calculation for the area of a cylinder: 2 * 3.1416 * getRadius() * (getRadius() + height)
• HINT: the calculation for the volume of a cylinder: 3.1416 * getRadius() * getRadius() * height

In your MAIN function (where you test the calls to the implementation files), create two cylinder objects (of type cylinder)

For one of the cylinder object, use the constructor to initialize the radius and height. For the second cylinder object use methods setRadius and setHeight.

Here is the header file to go off of.

class circleType

{

public:

           void setRadius(double r);

            double getRadius();

            double area();

            double circumference();

            circleType(double r = 0);

private:

          double radius;

};

here is the implementation file to go off of.

void circleType::setRadius(double r)

{

          if (r >=0)

                  radius = r;

           else

                  radius = 0;

}

double circleType::getRadius()

{

              return radius;

}

double circleType::area()

{

               return 3.1416 * radius * radius;

}

double circleType::circumference()

{

            return 2 * 3.1416 * radius;

}

circleType::circleType(double r)

{

           setRadius(r);

}

Answer 1

#include "stdafx.h"
#include <iostream>
#include <iomanip>
using namespace std;
const double PI = 3.1415926;
class Circle
{
private:
        double radius;
        double x;
        double y;
        double circumference;
        double cArea;
public:
Circle()
{
radius = 0;
x = 0;
y = 0;
circumference = 0;
cArea = 0;
}
        int setRadius()
{
cout << "Enter radius: ";
cin >> radius;
         if (radius < 1)
{
cout << "Please eneter a positive number: ";
cin >> radius;
}
         return radius;
}
        void setX()
{
cout << "Enter X cordinate: ";
cin >> x;
}
        void setY()
{
cout << "Enter y Coirdinate: ";
cin >> y;
}
        void setCircumference()
{
circumference = PI*(radius*radius);
cout << fixed << showpoint << setprecision(2);
cout << " Circumference is: " <<circumference << endl;
}
        void setCArea()
{
cArea = PI*(radius*radius);
cout << fixed << showpoint << setprecision(2);
cout << " Area is: " <<cArea << endl;
}
};
class Cylinder:public Circle
{
private:
        double height;
        double volume;
        double area;
        int rad;
public:
        Cylinder()
        {
                height = 0.0;
                volume = 0.0;
                area = 0.0;
                rad = 0.0;
        }


        void setheight()
        {
                cout << "What is the height: " << endl;
                cin >> height;
        }

        void setrad()
        {
                cout << "Please enter the radius" << endl;
                cin >> rad;
        }

        void setvolume()
        {
                volume = height * PI*(rad*rad);
                cout << fixed << showpoint << setprecision(2);
                cout << "Volume is : " << volume << endl;
        }

        void setarea()
        {
                area = 2*PI*(rad*rad) + 2*PI*(rad*height);
                cout << fixed << showpoint << setprecision(2);
                cout << "Surface area is : " << area << endl;
        }
};

int main()
{
        Circle shape1;
        Cylinder shape2;

        shape1.setX();
        shape1.setY();
        shape1.setCircumference();
        shape1.setCArea();
        cout << endl;
    std::cin.get();
    return 0;
}

Answer 2

#include "stdafx.h"
#include <iostream>
#include <iomanip>
using namespace std;
const double PI = 3.1415926;
class Circle
{
private:
        double radius;
        double x;
        double y;
        double circumference;
        double cArea;
public:
Circle()
{
radius = 0;
x = 0;
y = 0;
circumference = 0;
cArea = 0;
}
        int setRadius()
{
cout << "Enter radius: ";
cin >> radius;
         if (radius < 1)
{
cout << "Please eneter a positive number: ";
cin >> radius;
}
         return radius;
}
        void setX()
{
cout << "Enter X cordinate: ";
cin >> x;
}
        void setY()
{
cout << "Enter y Coirdinate: ";
cin >> y;
}
        void setCircumference()
{
circumference = PI*(radius*radius);
cout << fixed << showpoint << setprecision(2);
cout << " Circumference is: " <<circumference << endl;
}
        void setCArea()
{
cArea = PI*(radius*radius);
cout << fixed << showpoint << setprecision(2);
cout << " Area is: " <<cArea << endl;
}
};
class Cylinder:public Circle
{
private:
        double height;
        double volume;
        double area;
        int rad;
public:
        Cylinder()
        {
                height = 0.0;
                volume = 0.0;
                area = 0.0;
                rad = 0.0;
        }


        void setheight()
        {
                cout << "What is the height: " << endl;
                cin >> height;
        }

        void setrad()
        {
                cout << "Please enter the radius" << endl;
                cin >> rad;
        }

        void setvolume()
        {
                volume = height * PI*(rad*rad);
                cout << fixed << showpoint << setprecision(2);
                cout << "Volume is : " << volume << endl;
        }

        void setarea()
        {
                area = 2*PI*(rad*rad) + 2*PI*(rad*height);
                cout << fixed << showpoint << setprecision(2);
                cout << "Surface area is : " << area << endl;
        }
};

int main()
{
        Circle shape1;
        Cylinder shape2;

        shape1.setX();
        shape1.setY();
        shape1.setCircumference();
        shape1.setCArea();
        cout << endl;
    std::cin.get();
    return 0;
}